Spraying device



May 14, 1935.

N. w. DE FRL-:Es 2,001,455

SPRAYING DEVICE Filed June 16, 1952 2 Sheets-Sheet l A Trae/vs YJ Patented May 14, 1935 'f f Y n UNITED STATES PATENT foFFlcjE t SPRAYING DEVICE Nicholas W. De'Frees, Hastings', Minn., a'ssignor to H. D. Hudson Manufacturing Company, I Chicago, Ill., a corporation of Minnesota Application .time 16, 1932, serial No. '617,570

continus.` (o1. 29e-'89)` 4 This vinvention relates generallyy to improvepump barrel `is in horizontal position.t The strucments in sprayers of the type adapted for spraytures for .obtaining the above objects l are feaing insecticides of the type adapted Vto be car-l tures of the invention. ried by the operator, generally by one hand. Objects, features and advantages of the inven- Oneof the general objections to devices of tion will also be'setforth inthe description of 5 this kind (which include a cylindrical oil tank the drawings forming a part of this application, and a pump having a cylindrical barrel atand insaid drawings tached directly to the tank in tangential relation Figure 1 is a sideelevation ofthe sprayer showthereto) is that theconnection is expensive to ing the p'umpfcylinder'in'y sideiview andthe tank 10. make, and it is not Vstrong enough to standthe cylinder in endview, and'illustrating themanner V10 hard and careless usage-to which these* devices of connectingv these two lelements by a-single are often submitted. Heretofore, it has been the casting; i practice to secure the pump barrel directly to Figure 2 is an elevationiviewing the end of the the tank generally by asoldering operation. It cylinder and the` sideof the tank; and

15 hasalso been the practice to have a, depression Figure V3` is anenlarged sectional View take l5 or opening in the tank to receive the barrel, prinsubstantiallyon line 3;3 oi Figure 2. cipally to increase the area of contact for sol- Numeral-I indicates the vsupply tank; and nudering connection. None of such devices VYhave meral 2 the barrel of an airpump.. The long been entirely satisfactory. Moreover, it hasbeen axes of the tank and barrel are arranged subthe practice to place the spraying control; and stantiallyi perpendicularly-to' one another and 2O mixing valve on top of the barrel in an exposed said tank and barrel are connected together by a-` position where it ,could come contact with casting generallyindicated:3,which is provided various obstructions, Vand in which position it Vwith .plate-like members 14--5 .having surfaces was subject to constantjdanger of injury. conforming to thefcongurationof the outer face It is one of the principal objectsof this inof thebarrel andtank. The plates are soldered 25 vention to connect the tank andlbarrel by means to their respectiveA contacting elements.Y These lying vbetween them in a protected position, said plate-like members have comparatively large surmeans having the form of a casting 'or one-piece face contact and, therefore, a very strong conbody, provided with passages, and to` provide vnection'is obtained.

means for controlling the passages for obtain- I 'Ihe forward' portiony ofthe barrel 2 is par- 30 ing a spraying operation, the entire controlling tit'ione'd as'at I0 to provide a terminal compressed mechanism being partpof, or carried by, or mountair chamber I I.- Entrance of air to this chamber ed upon this single one-piece connecting member. under the action of a piston (notshown) is Other objects are to provide asimple device through a passage I2 controlled by checkvalve with few parts., which parts can be quickly aS- I3, and througha second passage I4, in the par- 35 sembled to produce. a strong structure; lto protition III.4 The valve, ofA course,acts Ato preventy vide asingle casting as a spraying control -unit egress of air after, introduction into said termiand connector for the pump cylinder and tank; nal chamber. In this instance, the compression to arrange this casting in a protected `position chamber lies forwardly of a plane drawn through 40 so that its parts will not come in Contact with the longaxis of the tank and perpendicularly to 40 obstructions as when the device is carried or the long` axis of the barrel. The barrel, how- When it is set down; to provide an improved arever, is not extended forwardly of this line a rangement o f the valve for controlling admission substantially greater distance i than the Alength of compressed air and fluid and oil, and forrnix'- ofthe radius of generation of the cylindrical ing and discharging the same; to provide a stop wall ofV the-tank.

screw adjustment for limiting the opening mo- Animportant feature of the invention relates tion of the valve; to' provide means whereby'all to the use of a single. casting orequivalent inof the operating parts are carried by a single tegral structure as a means for rigidly connectelement whichk secures the tank and cylinder' in ing the, barrel to the tank inoperative relation.

operative position; and to arrange the parts so This casting includes the aforementionedv ter- 50 that when the device is in' use and when the minal plates 45,- as Well as a tubular casing 25 hand grips the barrel and valve-operating means, enlarged at its vforward Y end .as at/ZS and prothe hand is located at the center of gravity of viding'the communicating axiallyzaligned bore thesystem, that is the. hand lies substantially portions 21-28. The long axis of this casing is 5 5 vertically over thetank when the airisl of the parallel with the longaxis of the barrel. The 55 a sliding bearing for a Valve stem, and the bore u 2'! is threaded as at 30.

A capping element and valve seat-forming and valve centering member is generally indicated at for removably securingthe memben, The member has a capping portion 33 which cooperates with the end of the casing 26 to close the bore portion 28, a suitable gasket 34 being interposed as shown. The member 3| also has a cylindrical establishing air communication between` the compressionl chamber ofi the barrel andthefbore 'and tank atoneiside-ct' the: seat dgeandsibetween-.the tank and the annular'chamber: `313;' om'thegrother side? of the seat.,A 'Ihes'e vpassages, are formed by tubular c'or'''ectingv 'members and traverse the plate-like members. Two; of. these tubularv mem: bers M -e5 are provided fori establishing compressed air vcom'munioation betweenl the; zbarrel and tankand may'bei-said;to together-forma pas-Y sage `which TintersectsthevboreV ,2li These passages are indicated at, 46a- 451, and liesvat one side of the seat 4U. The otherA tubular element 50, establishes communicationrbetween ,the annular chamber and the .tlank`I atfthe oppositeiside of the valve, vtl'iroughvits, passage 51..-`

Suitable passagesf'EZ establish communication between the chamber .and-the cylindrical bore portion of the .plug adj acent.. thea orice.:` as shown,Y Cooperative"withi-the'seai Mliis a truncatedconi-r calI` valve 55 which has; `afterward4 cylindrical extension? 5751 operativey in the cylindrical bore por-` cylindrical" extensioniwhi'ch. cruzxperate':withVr the bore 5l to center andguide the-Valve'iata point adjacent-the dischargeorice IH?.V A ste'm BDiextends rearwardly from the valve-:55?- and; passes. through the guide opening` .29: in the: casting. A suitable expansion'- springsblfsurrounds: the stem Sil-,f and bearslagainst thelvalve rtosseat it.

Oil supply tube 62' has one end socketed inl the plate 5 and.` tubular element'ltoestablislrran'oil passage leading (from-.the far peripheryofthe tank to the chamber-38; Suitable openings; 65, 66, 51- are formed. ingbarrelandrtank, and areY in register 'respectively with passages 46,- 431,.,51.k

Another feature of theinventionrrelates to theY arrangement oftheflever-Tlf.' for operatingw the valve 55y and particularly to, the location'. of the pivotal point-1| of' the lever andltolitsbeing sup:-

ported on the casting. 'Ihe pivot'lljforther lever or handle lies'- substantially ona linelA cutting the long axis of the tank and substantially perpendicular tothe long axis ofthebarreland the handle extends from its pivotrearwardlyin di rection away from the discharge'orice and longitudinally'ofand'adiacent the barrel.. A1 suitable pivotalcenneetion'- 12 between an extension "13. of the handleand:` theV valve stem is .provided as shown. The lever or handle -isarranged adjacent tl'ieba'rrel and vmovement toward th'er'bz'airrel opens thevawei Yi Another-I feature ofn the invention "relatesi to casing is bored as at 29 at the rear, to provideV the means'also carried by the casting for limiting the opening movement of the valve to correspondingly control mixing, and discharge of the mixture. To this endthe casting has a rearward extension i5 whichlies rearwardly of the stem beneath the handle adjacent the pivotal point of the handle with the casting, and the set. screw 'I6 has threaded engagement with this extension and Vis* in .axialr alignment with the stem. lIt is'evident that by adjusting the stop screw the throw of the valve stem in valve open- Y A Ving direction can be controlled. portion 3l of less diameter than the;'bore2.8z. which cooperates to form antannular. chamberV 38. surrounding the portion'l .The valvexseat' as indicated at 40, is of truncated conic'alforf* mation, and is convergent towardthe"s'zprayiigA orice 4I of the member 3k H The casting also provides suitable passages. for.

A Acombined handle and brace member 11 has the form ofthe segment of an ellipse and is atr-taclie'dat one end I8` to the pump as by solderand is; similarly attached by the other end 'I9 to the tank. The major axis B of the segif ment is disposed at an angle to the long axis of vthe barrel as indicated, so that the end portion 8i! of the smaller curvature isdisposed immediately adjacent thebarrel andfso *that vits concavefside faces toward theffcasting, and: isf

also opposed to-V ther endl 'ofthe-'control levcr.

closel placement. oi, this smaller-curved endf'of the ellipse enables the-suspension grip to' behad whichy lies near the barrel; andenear the center of gravity of f theL device whenthe 'barrelyis in the verticali position-jn' L The connectorv castingk 3 is of less' width`V than the diameter of the'barrel, andthe forward end et:- theicasing 2f`r is y disposed rearwardlyl of" aline Clv 'drawn y tangent to thetank' anditouching; the endoffthe'barrely 1 x I claim as'myinventiony:

1. Inaspraying device, acyli'ndrical tank, an

air-pumpincludingr a barrel, the long-axis of tank and' barrel being substantially'at'right angles-to Vonefanotlier, a; vrcasting-as the principal means connecting the barrel to Ythev tank, eaid'cast'ing providing suitable 4interconnn'unicating passages including'a borehaving anfaxi'sl substantially par-- allel" with' the barrel axis'a'ndl having an enlarged terminaljportion adiacenti: one end Vof the; barrel and spaced inwardly from the'fend of theA barrel,

a plug detachably 'secured within the smaller portion ofthe -bore and' forming vwith the larger portiona tern'iinalannularchamber -forreceivingl liquid from? thev tank, said? plug having a discharge-'orice .axiallyY alignedV with the bore, a passageestabli'shing communication `between the yan'- nula-rchamberv` and the discharge orice, Asaid castingincluding plate-like members havi'r'ig-s'u'r-4 face'sfconforming tothev conguratien of the outer faces' of thetank and barrel'and'soldered thereto "andalso having tubular memberswhich conneet the plates^-with-the aforementioned/bere, the `tank and' barrel having openings in vregister with the ,bore's'of 'saidtubular members; and` valve means operative inthe boreffor controlling the passages and A'discharge i oric'e for i performing a spraying operation, means floroperatingtheivalve includingfa; lever pivote'df to the casting,` said valve having' a stem withwhich the l'e'ver engages'a stop, said?. casting havingan extension, 'said ex,- tensionhaving. a set screw which is adjustable to limit the` openingV movementf of the valve, andl said lever lying betweenthetank and the barrel and opposed to "both and extending longitudinally of the barrel and the pivot for the lever lying substantially on aplane cuttingthe long, axis of i-.h'eztank andperpend-icular to .thelong axis of the barreL'. said lever. extendingin. a 4direction away froxirther, discharge oricerl and-fa .curved handle braceconneotingthetank and barrel. rear.-

wardly of the handle and having a concave portion facing and adjacent the handle. Y

2. A spraying device comprising a cylindrical tank and an air pump having a barrel, the long the seat and adapted to control the orifice, pasl sages in said casting and tank and barrel establishing communication between the pump barrel and tank across the bore and at one side of thev valve and seat, passages in said casting establishing communication between said tank and bore Y adjacent said orice, said casting being of 1:css width than the diameter of the barrel and having its oriced end lying at the inside of a plane tangent to the tank and cutting the end of the 10,

barrel, and means for operating the valve.

NICHOLAS W. DE FREES.V 

